JavaScript DOM编程艺术_Chapter 4

最新推荐文章于 2022-07-07 19:23:12 发布

Roenfun

最新推荐文章于 2022-07-07 19:23:12 发布

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分类专栏： JavaScript 文章标签： JavaScript DOM HTML

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showPic.js

function showPic(whichpic) {
var source = whichpic.getAttribute("href");
var placeholder = document.getElementById("placeholder");
placeholder.setAttribute("src",source);
var text = whichpic.getAttribute("title");
var description = document.getElementById("description");
description.firstChild.nodeValue = text;
}

layout.css

body {
font-family: "Helvetica","Arial",serif;
color: #333;
background-color: #ccc;
margin: 1em 10%;
}
h1 {
color: #333;
background-color: transparent;
}
a {
color: #c60;
background-color: transparent;
font-weight: bold;
text-decoration: none;
}
ul {
padding: 0;
}
li {
float: left;
padding: 1em;
list-style: none;
}

gallery.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>Image Gallery</title>
<script type="text/javascript" src="scripts/showPic.js"></script>
<link rel="stylesheet" href="styles/layout.css" type="text/css" media="screen" />
</head>
<body>
<h1>Snapshots</h1>
<ul>
    <li>
      <a href="images/fireworks.jpg" title="A fireworks display" onclick="showPic(this); return false;">Fireworks</a>
    </li>
    <li>
      <a href="images/coffee.jpg" title="A cup of black coffee" onclick="showPic(this); return false;">Coffee</a>
    </li>
    <li>
      <a href="images/rose.jpg" title="A red, red rose" onclick="showPic(this); return false;">Rose</a>
    </li>
    <li>
      <a href="images/bigben.jpg" title="The famous clock" onclick="showPic(this); return false;">Big Ben</a>
    </li>
</ul>
<img id="placeholder" src="images/placeholder.gif" alt="my image gallery" />
<p id="description">Choose an image.</p>
</body>
</html>